Alternatives and similar repositories for themes:

Users that are interested in themes are comparing it to the libraries listed below

• Madelena / Metrology-for-Beeper
  A flat design theme for Beeper. Based on Metro Design System.
  ☆40Updated last year
• hfellerhoff / serial
  A snappy, customizable video feed. Designed to show you exactly the content you want to see and nothing else.
  ☆36Updated this week
• sirlan-ff00ff / arcticfox-theme
  a theme for Firefox (and sidebery) to make it look and somewhat behave like Arc
  ☆57Updated 5 months ago
• diamondburned / slemmy
  Lemmy client in Svelte
  ☆54Updated last year
• Write / TangerineUI-Userscript
  An userscript to load TangerineUI's redesign by @nileane 🍊🐘 on whichever instance you'd like !
  ☆14Updated 4 months ago
• easonwong-de / Tab-Preview-On-Hover
  Adds on-hover tab preview to Firefox (requires CSS theme).
  ☆37Updated 4 months ago
• LITdevs / OMGEX
  Extended profile features for OMG.LOL
  ☆35Updated 2 years ago
• KbamApp / kbam
  Open source mobile app for Kbin
  ☆52Updated last year
• Technicolor-Dreamcoat / Quiblr
  Quiblr is an intuitive, accessible, and modern interface to connect users to the fediverse
  ☆62Updated 5 months ago
• kagisearch / kite-public
  Open source repository for Kite, news app by Kagi.
  ☆45Updated last month
• dmlls / yang
  Yang! - Yet Another Bangs anywhere extension
  ☆52Updated last month
• standardnotes / plugins
  Community plugins for Standard Notes — Experimental 🧪
  ☆94Updated 8 months ago
• mmjee / Piped-Material
  A fork of Piped, focusing on better performance and a more usable design.
  ☆160Updated 2 months ago
• Kaskapa / Monochrome-Neubrutalism-Firefox-Theme
  ☆19Updated 10 months ago
• casimir / frigoligo
  Your articles with you
  ☆111Updated this week
• doorhinge-apps / Aura-Browser
  Aura is an open source alternative for Arc browser. It has support for iOS, iPadOS, macOS, and VisionOS.
  ☆86Updated last month
• catppuccin / infinity
  🛸 Soothing pastel theme for Infinity for Reddit
  ☆69Updated 2 years ago
• JLBlk / Zen-Themes
  Themes/Mods for @zen-browser
  ☆86Updated this week
• agrmohit / omnivore-epub
  A program to generate epub file from articles saved in your Omnivore library and optionally send it to your eReader using email
  ☆105Updated 5 months ago
• skyline-apps / curio
  Feed your curiosity. Save your articles now and read them later.
  ☆26Updated this week
• neurokitti / Arc_Palette
  A community made Color Picker to add gradients to Arc on Windows
  ☆78Updated 3 months ago
• streetwriters / notesnook-themes
  ☆41Updated 3 weeks ago
• kagisearch / bangs
  Repository of bangs used by Kagi Search
  ☆227Updated last week
• ernestwisniewski / kbin-mobile
  Kbin mobile client based on Flutter and Dart.
  ☆49Updated last year
• Beaver-Notes / Beaver-pocket
  All the amazing features of Beaver Notes packed into the perfect note-taking app for you on the go.
  ☆60Updated this week
• zen-browser / theme-components
  📦 Some of @zen-browser's official themes and utility styles!
  ☆61Updated 7 months ago
• shanto / Sidebery
  Firefox extension for managing tabs and bookmarks in sidebar.
  ☆19Updated 6 months ago
• kawaiier / awesome-kagi-css
  A collection of custom Kagi themes with screenshots
  ☆70Updated 2 months ago
• beeper / sdk-docs
  Documentation for various SDKs that can be used with Beeper
  ☆41Updated last year
• DimitrisMilonopoulos / mitsugen
  Material You for Gnome and GTK4 and GTK3
  ☆114Updated last year